The tone of Thursday night's vice-presidential debate was buoyant and some might even say relaxed -- Vice President Joe Biden and Rep. Paul Ryan (R-Wis.) sat at tables rather than stand at formal lecterns and Biden seemed to chuckle and guffaw through the whole thing. (Said one senator watching, "He had his Red Bull. He certainly had his caffeine.")

That bright mood extended to the fashions, as Janna Ryan and Jill Biden stepped up their color game.

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